Serena Williams makes her comeback to Grand Slam tennis after the birth of her daughter in September. She hasn't played in a major since winning her 23rd Grand Slam title at the 2017 Australian Open. The three-time French Open champion plays Kristyna Pliskova of the Czech Republic. Ranked 70th, Pliskova failed to advance past the first round in three previous attempts at Roland Garros.

Also in the women's first round, 2016 winner Garbine Muguruza plays another former French Open champion, Russia's Svetlana Kuznetsova, who won in 2009. And No. 1 seed Simona Halep starts her French Open campaign against 83rd-ranked Alison Riske of the United States.

On the men's side, No.1 seed Rafael Nadal will aim to quickly finish his rain-interrupted first-round match against Italy's Simone Bolelli. The 10-time French Open champion is leading 6-4, 6-3, 0-3.